Wireshark mailing list archives

Re: About window scale option


From: Jeff Morriss <jeff.morriss.ws () gmail com>
Date: Tue, 11 Nov 2014 13:10:25 -0500

On 10/30/14 17:40, Jeff Morriss wrote:
Hmm, I don't do much with TCP (from a protocol perspective) but that
certainly makes sense.  And, in fact, it appears that the TCP dissector
*wants* to act that way, based on the comments in the code:

/* This is called for SYN and SYN+ACK packets and the purpose is to
verify
 * that we have seen window scaling in both directions.
 * If we can't find window scaling being set in both directions
 * that means it was present in the SYN but not in the SYN+ACK
 * (or the SYN was missing) and then we disable the window scaling
 * for this tcp session.
 */

It would be good if someone can open a bug report (attaching this
already-public capture file) so this isn't forgotten.

Oh, I just noticed there's already a bug open for it:

https://bugs.wireshark.org/bugzilla/show_bug.cgi?id=10514

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